Simon Cassidy

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This discussion, supported by the author's personal reflections as a mentor and teacher, examines the issue of subjectivity when assessing the competence of pre-registration nursing students during their clinical placements. A difference is highlighted between valid and invalid subjectivity affecting the quality of mentors' assessments. Valid subjectivity(More)
The discovery of high-temperature superconductivity in a layered iron arsenide has led to an intensive search to optimize the superconducting properties of iron-based superconductors by changing the chemical composition of the spacer layer between adjacent anionic iron arsenide layers. Superconductivity has been found in iron arsenides with cationic spacer(More)
The development of a technique for following in situ the reactions of solids with alkali metal/ammonia solutions, using time-resolved X-ray diffraction methods, reveals high-temperature superconducting ammonia-rich intercalates of iron selenide which reversibly absorb and desorb ammonia around ambient temperatures.
The skills required to break bad news have been written about extensively and are taught in medical schools. Recent initiatives have concentrated on improving the skills of doctors and nurses in senior positions, who act as role models for their junior colleagues. A multiprofessional learning situation can be a threatening environment, in which colleagues(More)
Hydrothermal synthesis is described of layered lithium iron selenide hydroxides Li(1-x)Fe(x)(OH)Fe(1-y)Se (x ∼ 0.2; 0.02 < y < 0.15) with a wide range of iron site vacancy concentrations in the iron selenide layers. This iron vacancy concentration is revealed as the only significant compositional variable and as the key parameter controlling the crystal(More)
The concept of counselling as a helping process, focusing attention on the interrelatedness of individuals and their world, is a critical aspect of contemporary nursing. Counselling skills also have implications for nurses involved in mentoring pre-registration nursing students, particularly where accurate, credible and accountable assessment hinges on how(More)
AIM To develop a substantive theoretical explanation of how mentors make sense of their experiences where nursing students are on the borderline of achievement of competence in clinical practice. BACKGROUND The reluctance of Registered Nurse mentors to fail nursing students in clinical practice despite concerns about competence remains a contemporary(More)
Lithiation of hydrothermally synthesized Li1-xFex(OH)Fe1-ySe turns on high-temperature superconductivity when iron ions are displaced from the hydroxide layers by reductive lithiation to fill the vacancies in the iron selenide layers. Further lithiation results in reductive iron extrusion from the hydroxide layers, which turns off superconductivity again as(More)